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发明名称
Wärmeaustauscher für gasbeheizte Durchlauferhitzer
摘要
申请公布号
AT232693(B)
申请公布日期
1964.03.25
申请号
AT19620005486
申请日期
1962.07.07
申请人
JOH. VAILLANT K. G.
发明人
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